Whistle



Jan. 2, 1923.

1,440,698. v. c. RocHoLL.

WHISTLE.

FILED MAR.31.1922.

mmnnlaj *A V. C. Foclzall M INVENTOR.

- ,1 Tom-'Ex'.

Patented 2, l1923i VALENTINE o." economi, or roar WAYNE, INDIANA.

' 5 wHisrLE. I

i nppuationeieamrcn si, ieee. semi No. 543,357.

To azllfwlwm t may conc-em:

Be it known that I, VALENTINE CLQRO- oHoLL, a citizen of the UnitedStates residing at Fort Wayne, in the countyof Allen and State ofIndiana, have invented new and useful Improvements inV Whistles, of

which the followin is a specication.

The invention re ates to whistles adapted gine. This failure to hear thewhistle isde to the destruction of the forwardly pro]ect.A

ed sound waves caused by the lack of .resili ency of the air forwardlyof the whistle. The resiliency of the air is destroyed by exhaust steam,burned gases, smoke and fog, which combination of articial andlnaturalsound resisting elements, combined with the head resistance of theonrushingv locomotive has a tendency to and does destroy all forwardsound waves, On a foggy or humid day the exhaust steam, burned gasesand. smoke ejected from the stack of a locomotive do not rise quicklybut often seem to travel directly toward the whistle. The resiliency ofthe air in front of the whistle isthereby destroyed andy the forwardsound'waves of the whistle are instantly broken up or destroyed. Hence aperson in front of the oncoming locomotive under the conditions just setforth will seldomhear the whistle when blown.

The object of my invention isl to provide a whistle by which the abovementioned dificulties shall 'be eliminated, and I accomplish theinvention by a device having means to project the Sound waves upwardlyfrom the whistle into the Vstrata of resilient air above that throughwhichthe whistle is travelling, in which stratathe sound waves willtravel without obstruction.

In the accompanying ldrawings I have illustrated an embodiment of theinvention in which Figure 1 is a perspective view of a whistle providedwith the invention; Fig.- 2 a vertical central section of the same; Fig.

3 a bottom view of the bell; Fig-4 a .plan

view of the base with the guard thereon; Fig. 5 an elevational view. ofthe directing cone and Fig. 6 an elevational View of the f guard.

Referring to the embodiment ofthe invention illustrated in the drawings,1 is the base of `the whistle of.usual construction and' mountedon thecasing 2 of the'vvalve 3. I i

adapted to be operated by the leverl in the usual manner. Inv .the typeof base. illustrated in the ldrawings theuid 4under pressure-enters thebase and escapes through the annular space between the" plate -5 andtheI adjacent wall of thecup 'member 6 ofthe` base. The base illustrated inthe drawings forms no part of my invention, hence it 1s unnecessary tofurther describe it. A guard" 7 is secured to or is integrally formedwith the cup member 6. It flares outwardly from theupperjedge of thelatter member,` the angle of inclination from the perpendicular beingthat which will best accomplish the y results yto, obtained, ashereinafter de scribed. i

The usual beu 8 is adjusfatiy Supported Aon the rod 9 suitably Securedin the base 1, the adjustment being in a vertical direction in order toregulate the elevation of the.

'lower end of the bell with respect to the base. The plane of the lowerend of the bell is below the plane of the upper edge of the guard sothat the guard shall protect the Y said edgefrom the rapid air currentsand the exhaust steam 'and gases ejected from the stack ofa locomotive,when the whistle is used thereon. An .inverted cone-shaped sleeve 10 issecured to the exterior surface of the bell at a suitable point abovethe lower -end of the bell. The lower edge of the sleeve is featheredtoyprevent any obstruction to the sound waves at said edge. The outer fa-ceof the sleeve is concaved vertically, and the sleeve in cooperation,with the guardl di-v rect the sound waves upwardly and outwardly. Theguard l7 and the directing sleeve 10 are preferably made separately sothat they may be attached to the base and bell of whistles already inuse; but it is ap? parent that in new whistles made with theimprovement, the guard may be formed integrally with the base and thedirecting sleeve in like manner may be formed integrally with the bell.

Since the directing Sleeve member and the guard cooperate todirect thesound waves producedv when the whistle is blown in an upward and outwarddirection, the waves los travel into an upper strata of air above thatoccupied `by the Huids ejected from the stack with. rlhe sound wavestravel in theVY latter strata in all directions and a personahead ofthewhistle-may hear itas well as one behind it or att-either side'.

The slots l1 are-fomned in the lower portion of the guard .7 and providea circulazK tion of airl over the upper edge of the guard,

and out through the slots. This is provided so that the Huid'underpressure shall have free escape .and not bexaectedin any wa thebase. l f

by air currents or pockets in the vicinity What 'l claim is: l. Awhistle comprising a base, a bell supported on the base and cooperatingmeans j on the bell and base for directing the sound waves produced, inanupwa-rd and outward direction.

2. 'A whistle comprising abaseQ-a bell supported on the base, asoundwave directin y member on the bell, andan annular guar reedeee f yon the base" adapted to cooperate with the i whose reslliency has: notbeen lnterfered f directlng member to cause thesound waves 25 producedwhen the whistle is'hlown to travel upwardly and outwardlyfromthwhistle.

3. Awhistle comprising a base, an annular guard `on the u per ed e ofthehase which flares'outwardly, a be supported on thebase and a memberonthefhelll having its outerjace concaved verticali and adapted todirect'sound waves upwar` y. n

e. A whistle comprising a base, an annu lar outwardly flaring guardsecured to the upper edge vof the base, a bell-adjustably supportedonthe base, a sleeve' secured to f the: outer wall of thel.` bell havingits outer1 face curved or concaved in a vertical direction, the sleeveand guard hei-ng adapted-to cooperate to direct upwardly and outwardlythe sound wavesl produced by the whistle;

ln witness whereof` lv have hereunto snubscribed my 1922. f

, VALEN'llNEi C. RCHLL.

name this 30th day of lldarch,l

